I apologize in advance for the noise as this may well be an issue with dotnet. I'm trying to build a project that uses SDK version 3.1. When I ran the build command, I got the error "No usable version of libssl was found". Installing libssl-1.1 let me get past this error. But now I'm getting the following error making me wonder if I need to do anything more than just installing libssl-1.1: Microsoft (R) Build Engine version 16.7.2+b60ddb6f4 for .NET Copyright (C) Microsoft Corporation. All rights reserved. Determining projects to restore... Terminating plugin 'CredentialProvider.Microsoft' due to an unrecoverable fault: NuGet.Protocol.Plugins.ProtocolException: A plugin protocol exception occurred. ---> NuGet.Protocol.Plugins.ProtocolException: The SSL connection could not be established, see inner exception. at NuGet.Protocol.Plugins.OutboundRequestContext`1.HandleFault(Message fault) at NuGet.Protocol.Plugins.MessageDispatcher.OnMessageReceived(Object sender, MessageEventArgs e) at NuGet.Protocol.Plugins.Connection.OnMessageReceived(Object sender, MessageEventArgs e) at NuGet.Protocol.Plugins.Receiver.FireMessageReceivedEvent(Message message) at NuGet.Protocol.Plugins.StandardOutputReceiver.OnLineRead(Object sender, LineReadEventArgs e) --- End of inner exception stack trace --- -- Regards, Sadeep PGP: 103BF9E3E750BF7E